m_kicknorejoin Limit time to 30m by default

m_kicknorejoin Limit time to 30m by default

In the current implementation we only expire entries when someone joins, without a limit it was possible to make us practically never remove entries and consume (a tiny amount of) memory for each entry until the mode was removed/parameter was changed

The default limit of 30m is chosen to not surprise people when they upgrade. If you need to prevent rejoins for more than a minute then you should set a (timed)ban instead

Config option is available to change the limit (2.0 only)